Hi, When I run ffmpeg command on a wav file, the received output file is of large size as compared to the original file. The command and the output are below,
*FFMPEG command* % ~/Downloads/audio/ffmpeg -i call-redacted.wav output.wav ffmpeg version 4.4.1-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2000-2021 the FFmpeg developers built with Apple clang version 11.0.0 (clang-1100.0.33.17) configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay libavutil 56. 70.100 / 56. 70.100 libavcodec 58.134.100 / 58.134.100 libavformat 58. 76.100 / 58. 76.100 libavdevice 58. 13.100 / 58. 13.100 libavfilter 7.110.100 / 7.110.100 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 Input #0, mp3, from 'call-redacted.wav': Metadata: encoder : Lavf58.45.100 Duration: 00:13:06.38, start: 0.138125, bitrate: 64 kb/s Stream #0:0: Audio: mp3, 8000 Hz, stereo, fltp, 64 kb/s Stream mapping: Stream #0:0 -> #0:0 (mp3 (mp3float) -> pcm_s16le (native)) Press [q] to stop, [?] for help Output #0, wav, to 'output.wav': Metadata: ISFT : Lavf58.76.100 Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, stereo, s16, 256 kb/s Metadata: encoder : Lavc58.134.100 pcm_s16le size= 24569kB time=00:13:06.17 bitrate= 256.0kbits/s speed=2.97e+03x video:0kB audio:24569kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000310 *Input and output file sizes* du -sh call-redacted.wav 6.5M call-redacted.wav du -sh output.wav 24M output.wav Alternatively, when I run the same command but change the output file's extension to mp3, the correct sized file is returned. But the time taken (6 seconds) in this case is quite higher than the previous case(less than 1 second). The command and output is below, ~/Downloads/audio/ffmpeg -i call-redacted.wav output.mp3 ffmpeg version 4.4.1-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2000-2021 the FFmpeg developers built with Apple clang version 11.0.0 (clang-1100.0.33.17) configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-ffplay libavutil 56. 70.100 / 56. 70.100 libavcodec 58.134.100 / 58.134.100 libavformat 58. 76.100 / 58. 76.100 libavdevice 58. 13.100 / 58. 13.100 libavfilter 7.110.100 / 7.110.100 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 Input #0, mp3, from 'call-redacted.wav': Metadata: encoder : Lavf58.45.100 Duration: 00:13:06.38, start: 0.138125, bitrate: 64 kb/s Stream #0:0: Audio: mp3, 8000 Hz, stereo, fltp, 64 kb/s Stream mapping: Stream #0:0 -> #0:0 (mp3 (mp3float) -> mp3 (libmp3lame)) Press [q] to stop, [?] for help Output #0, mp3, to 'output.mp3': Metadata: TSSE : Lavf58.76.100 Stream #0:0: Audio: mp3, 8000 Hz, stereo, fltp Metadata: encoder : Lavc58.134.100 libmp3lame size= 2304kB time=00:13:06.17 bitrate= 24.0kbits/s speed= 130x video:0kB audio:2304kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.011063 du -sh output.mp3 3.3M output.mp3 Please help me out in identifying the right command options for optimum time and filesize. Regards, Shubham _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
